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pythonnet/pythonnet/src/runtime/pythonexception.cs at master · chid/pythonnet · GitHub
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pythonnet
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pythonnet
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src
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runtime
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pythonexception.cs
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// ==========================================================================
// This software is subject to the provisions of the Zope Public License,
// Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
// WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
// FOR A PARTICULAR PURPOSE.
// ==========================================================================
using
System
;
namespace
Python
.
Runtime
{
/// <summary>
/// Provides a managed interface to exceptions thrown by the Python
/// runtime.
/// </summary>
public
class
PythonException
:
System
.
Exception
{
private
IntPtr
excType
=
IntPtr
.
Zero
;
private
IntPtr
excValue
=
IntPtr
.
Zero
;
private
IntPtr
excTb
=
IntPtr
.
Zero
;
private
bool
disposed
=
false
;
public
PythonException
(
)
:
base
(
)
{
Runtime
.
PyErr_Fetch
(
ref
excType
,
ref
excValue
,
ref
excTb
)
;
Runtime
.
Incref
(
excType
)
;
Runtime
.
Incref
(
excValue
)
;
Runtime
.
Incref
(
excTb
)
;
}
// Ensure that encapsulated Python objects are decref'ed appropriately
// when the managed exception wrapper is garbage-collected.
~
PythonException
(
)
{
Dispose
(
)
;
}
/// <summary>
/// Type Property
/// </summary>
///
/// <remarks>
/// Returns the exception type as a Python object.
/// </remarks>
public
IntPtr
Type
{
get
{
return
excType
;
}
}
/// <summary>
/// Value Property
/// </summary>
///
/// <remarks>
/// Returns the exception value as a Python object.
/// </remarks>
public
IntPtr
Value
{
get
{
return
excValue
;
}
}
/// <summary>
/// Traceback Property
/// </summary>
///
/// <remarks>
/// Returns the exception traceback as a Python object.
/// </remarks>
public
IntPtr
Traceback
{
get
{
return
excTb
;
}
}
/// <summary>
/// Dispose Method
/// </summary>
///
/// <remarks>
/// The Dispose method provides a way to explicitly release the
/// Python objects represented by a PythonException.
/// </remarks>
public
void
Dispose
(
)
{
if
(
!
disposed
)
{
if
(
Runtime
.
Py_IsInitialized
(
)
>
0
)
{
IntPtr
gs
=
PythonEngine
.
AcquireLock
(
)
;
Runtime
.
Decref
(
excType
)
;
Runtime
.
Decref
(
excValue
)
;
Runtime
.
Decref
(
excTb
)
;
PythonEngine
.
ReleaseLock
(
gs
)
;
}
GC
.
SuppressFinalize
(
this
)
;
disposed
=
true
;
}
}
/// <summary>
/// Matches Method
/// </summary>
///
/// <remarks>
/// Returns true if the Python exception type represented by the
/// PythonException instance matches the given exception type.
/// </remarks>
public
static
bool
Matches
(
IntPtr
ob
)
{
return
Runtime
.
PyErr_ExceptionMatches
(
ob
)
!=
0
;
}
}
}
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